300 Kva Oil Immersed Electric Distribution Transformer 1000 Kva 450 Kva Three Phase 380V Output
300 Kva Oil Immersed Electric Distribution Transformer 1000 Kva 450 Kva Three Phase 380V Output
1. Product Description
The 300 Kva, 450 Kva and 1000 Kva Three Phase Oil Immersed Electric Distribution Transformer is a standard medium-capacity power distribution solution designed for industrial, commercial and municipal power grid systems. This series of oil immersed distribution transformers features fixed three-phase 380V output voltage, matching the most common low-voltage power consumption standards for industrial equipment and civil power distribution worldwide. Covering three mainstream power ratings of 300kVA, 450kVA and 1000kVA, it fills the market demand gap for medium-load three-phase power conversion, serving as the core step-down and voltage stabilization equipment for medium and low-voltage power distribution networks.
Manufactured with high-grade low-loss silicon steel core and high-purity copper windings, this three-phase oil filled transformer adopts mature ONAN oil natural air natural cooling technology and fully sealed tank structure. It supports stable operation under standard 50Hz and 60Hz grid frequencies, adapting to regional power supply standards in different countries and regions. All finished products strictly comply with IEC 60076 and national power equipment safety standards, undergoing rigorous high-voltage withstand testing, partial discharge detection and full-load temperature rise testing before delivery. With stable 380V three-phase balanced output performance, it effectively solves common problems such as terminal voltage instability, three-phase current imbalance and excessive line loss in industrial and urban power distribution systems.
2. Product Features
2.1 Standard 380V Three-Phase Stable Output
Tailored for universal 380V three-phase low-voltage power demand, this oil immersed distribution transformer maintains precise output voltage accuracy within ±2% under no-load and full-load conditions. The optimized Dyn11 vector group design ensures excellent three-phase current balance, effectively restraining voltage distortion and phase deviation caused by unbalanced industrial loads. The fixed 380V output specification perfectly matches the operating voltage of most industrial machinery, automated production lines, commercial electrical equipment and municipal power distribution systems, eliminating the need for secondary voltage conversion for most terminal loads.
2.2 Graded Medium Capacity Coverage
The product lineup includes three practical capacity specifications: 300kVA, 450kVA and 1000kVA, covering light, medium and conventional heavy medium-load power distribution scenarios. The 300kVA model is suitable for small and medium-sized factory workshops and regional partial power distribution, the 450kVA model adapts to medium-sized industrial parks and centralized commercial power supply, while the 1000kVA large-medium capacity meets the high-load power demand of large processing factories and comprehensive industrial zones. The graded capacity design allows flexible model selection according to actual load power, avoiding equipment power redundancy or insufficient power supply capacity.
2.3 High Efficiency & Low Loss Energy-Saving Design
Adopting upgraded low-loss magnetic core materials and dense winding optimization technology, this three-phase oil immersed electric transformer greatly reduces no-load loss and load loss during long-term continuous operation. Compared with traditional old-generation distribution transformers, its overall power conversion efficiency is significantly improved, effectively reducing reactive power consumption and grid line transmission loss. Long-term operation can greatly cut down the power operation cost of enterprises and power supply departments, fully meeting modern power grid energy-saving renovation and low-carbon operation requirements.
2.4 Reliable Oil-Immersed Cooling & Sealed Structure
Equipped with high-insulation mineral transformer oil and fully sealed corrugated tank structure, the equipment realizes efficient circulating heat dissipation through natural oil convection. The external corrugated heat dissipation fins expand the heat exchange area, ensuring stable temperature control even under long-term full-load and intermittent overload operation. The vacuum oil injection sealing process isolates internal components from external air and moisture, preventing oil emulsification, insulation aging and internal dust accumulation, effectively extending the overall service life of the transformer and reducing daily failure rates.
2.5 Strong Environmental Adaptability & Low Maintenance
The whole machine adopts multi-layer anti-corrosion and weather-resistant coating treatment, with excellent dustproof, moisture-proof, rain-proof and anti-aging performance. It can operate stably in indoor substation rooms, outdoor open substations and factory field environments with variable temperature and humidity. The fully sealed structure requires no regular oil replacement or complex routine maintenance, only simple regular appearance inspection and parameter monitoring. It features low failure rate and long service life, greatly reducing later operation and maintenance labor costs and time costs.
2.6 Complete Safety Protection Performance
Built with standard overvoltage, overcurrent, short-circuit and over-temperature protection mechanisms, this 380V output distribution transformer can automatically cut off faulty circuits in case of grid surge, load short circuit and overload abnormalities. It is equipped with oil level indicators, pressure relief valves and temperature monitoring devices to realize real-time operation status monitoring. The reinforced insulation structure effectively resists instantaneous grid impact and lightning surge, ensuring safe and stable operation of power distribution systems and terminal electrical equipment.
3. Core Purpose
This 300kVA/450kVA/1000kVA three-phase oil immersed distribution transformer is core medium-voltage step-down power conversion equipment for industrial and municipal low-voltage power distribution systems. Its primary core function is to convert medium-voltage grid power into standard 380V three-phase industrial power, providing stable, safe and continuous power supply for three-phase electrical loads in industrial production, commercial operation and municipal engineering fields.
In addition to basic voltage transformation and power distribution functions, the equipment also undertakes key tasks such as grid power quality optimization, three-phase load balancing, distribution line loss reduction and power supply safety isolation. It can effectively improve the stability and reliability of terminal 380V power supply, solve the problems of voltage fluctuation and unstable power supply in industrial production and urban power distribution, and support the safe and efficient operation of large-scale three-phase electrical equipment and centralized power distribution systems.
4. Application Scenarios
4.1 Industrial Factory Power Distribution
It is widely used in mechanical processing factories, electronic manufacturing workshops, food processing plants and chemical industrial enterprises. The 300kVA model is suitable for single workshop independent power supply, the 450kVA model matches multi-workshop joint power distribution, and the 1000kVA model is applicable to large-scale factory overall power transformation. The stable 380V three-phase output perfectly meets the power demand of automated production lines, servo equipment, large motors and industrial control cabinets, ensuring continuous and stable industrial production.
4.2 Industrial Park Centralized Power Supply
Suitable for centralized power distribution of small and medium-sized industrial parks, industrial zones and enterprise industrial bases. Multiple capacity specifications can be matched according to the overall load of the park, realizing hierarchical power distribution and load regulation. The high-efficiency and low-loss operation performance effectively reduces the overall power consumption of the park, and the reliable outdoor operation capability adapts to open substation layout of industrial parks, meeting the long-term continuous power supply demand of cluster industrial loads.
4.3 Commercial & Public Building Power Distribution
Widely applied in large shopping malls, office buildings, hotel complexes, hospitals and school campus power distribution systems. The 380V stable output supports central air conditioning, elevator equipment, fire protection systems and large-scale commercial electrical equipment. The low-noise operation and high-safety performance meet the high-standard power supply requirements of public and commercial places, avoiding power supply faults affecting public operation and business development.
4.4 Municipal Engineering & Infrastructure Power Supply
Used for municipal road engineering, urban supporting facilities, logistics parks and industrial infrastructure power distribution. The equipment has strong environmental adaptability and can adapt to temporary and long-term fixed power supply scenarios of municipal projects. The medium-capacity design perfectly matches the power demand of municipal large-scale mechanical equipment and supporting service facilities, providing reliable power guarantee for urban infrastructure operation and construction.
4.5 New Energy Auxiliary Power Distribution
Matched with distributed photovoltaic power stations, small wind power generation systems and industrial energy storage systems, it is used for new energy power conversion and grid-connected power distribution. It stabilizes fluctuating new energy power output, converts it into standard 380V industrial power, and realizes on-site load power supply and safe grid connection, effectively improving the utilization rate of new energy power generation.
5. FAQ (Frequently Asked Questions)
Q1: Why choose 380V fixed output oil immersed transformers for industrial power distribution?
Most industrial three-phase equipment, automated production lines and factory power distribution systems adopt 380V rated operating voltage. This series of three-phase oil immersed distribution transformers adopts fixed 380V three-phase output design, which can directly match terminal industrial loads without additional voltage conversion equipment, saving engineering construction cost and space. Meanwhile, the oil immersed cooling structure provides stronger overload resistance and more stable voltage regulation than dry-type transformers in long-term industrial full-load operation, effectively avoiding equipment shutdown and damage caused by voltage instability, making it the preferred power distribution equipment for industrial scenarios.
Q2: How to select between 300kVA, 450kVA and 1000kVA capacity models?
Capacity selection is mainly based on actual total load power and future expansion demand. The 300kVA transformer is ideal for small single workshops, small processing factories and partial regional power distribution with light load demand. The 450kVA model is the most versatile option, suitable for medium-sized factories, independent commercial buildings and conventional industrial park branch power distribution. The 1000kVA model is used for large factories, comprehensive industrial parks and centralized high-load power supply scenarios. It is recommended to reserve 10%-20% power margin during selection to prevent long-term full-load operation and extend transformer service life.
Q3: What daily maintenance does this oil immersed distribution transformer need?
This fully sealed oil immersed electric transformer requires minimal daily maintenance compared with traditional open-type transformers. Daily management only needs regular visual inspection of the shell for corrosion, oil leakage and deformation, checking the oil level gauge to ensure normal insulating oil capacity, and monitoring operating temperature and three-phase output voltage balance. Seasonally, simply clean surface dust and check the tightness of wiring terminals. The sealed structure avoids oil oxidation and moisture intrusion, so frequent oil replacement and internal overhaul are not required, greatly reducing long-term operation and maintenance costs for enterprises and power grid departments.
